Feed mechanism for sewing-machines



(ModeL) t M. A. DILLEY.

FEED MEOHANISM FOR SEWING MACHINES. No. 263,689. x Patented Sept. 5,1882.

UNITED STATES PATENT OFFICE.

MARTIN A. DILLEY, OF WASEPI, MICHIGAN.

FEED MECHANISM FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 263,689, datedSeptember 5, 1882.

Application filed January 12,1882.

To all whom it may concern Be it known that I, MARTIN A. DILLEY, acitizen of the United States of America, residin g at Wasepi, in thecounty of St. Joseph and I State of Michigan, have invented certain newand useful Improvements in Feed Mechanism for Sewing-Machines; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains -to make and use the same, reference being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

This invention relates to certain improvements for the feed mechanismfor sewing-machines as shown and described in United States LettersPatent granted to me October 4, 1881, and numbered 247,750.

My improvement consists in making the face-plate of convenient width toadmit the helper or holder bar, and arranging the trip and lever betweenthe helper or holder bar and the needle-bar, whereby in the downwardmovement the cam -lifter will act upon the trip, thus causing the helperor holder bar to be raised.

My improvement further consists in the lifting device of thepresser-bar,so arranged that jhelper or holder being made in two parts and the longarm of the trip device is pivoted to the face-plate by means of ascrew-pin, as will be hereinafter more fully described. My improvementfurther consists in the helper or holder being made in two parts andhinged to the lower end of the holder-bar.

My improvement further consists in the Fig. 2 is a sectional view of thesame, taken (Model.)

through the line w w of Fig. 1. Fig. 3 is a perspective view of thecam-lift with the antifriction roller attachment. Fig. 4 is a detachedview of the hinged helper or holder foot. Fig. 5 is a perspective Viewof the helper or holder bar and its attachments, and Fig. 6 is asectional view taken through the line 2 z of Fig. 1. v

In the annexed drawings, the letter A represents the face-plate, formedwith a vertical slot, at, for the purpose hereinafter stated.

The letter B represents a needle-bar of a sewing-machine of the ordinaryconstruction, to which the cam-lift O is firmly secured. This cam-lift C(see Fig. 3) is formed or provided at its lower end with ajournal-bearing, 0, upon which is mounted the anti-friction roller 0.The letter D represents the presser-bar, formed with the shoulder d, andprovided with the pivoted arm or link 0, connected at its upper end tothe pivoted lever f, as seen in Fig. l of the drawings. The lever f,which works on an axis, h, attached to the face-plate, is provided withan anti-friction collar or washer, 'i, at its lower end for en gagementwith the upper surface of the cam.

The letterE represents the helper or holder bar, (see Fig. 5,) havingits upper portion reduccd to receive the encircling coil-spring l, andat its lower end formed or provided with the ears or arms m, serving asmeans for a hinge or pivotal connection, and also formed or providedwith the extension at, which engages with the shoulder 61 of the bar D.

To the lower end of the helper or holder bar, between the side ears, m,is attached the holder-foot F by means of the hinge-connection p. Thisholder-foot device is composed of two parts, r and s, pivotally rivetedor united together, the part r being formed at its base with a slot forthe passageof the needle, and a heel sii'nilar to that shown in mypatent hereinbefore referred to. The upper portion of the part 8 isformed withan eye to form the hinge-connection, through the means of apin or pivot, to the arm m of the bar E. One end of the pivot formingthe hinge-connection is extended or prolonged, as seen in Fig. 2 of thedrawings, and around which is wrapped or coiled and secured one end ofthe spring H, and the opposite end of which is extended downward, and iscurved around so as to embrace the part 1" of the holder-foot, andserves the office of a tension in retaining the holder-foot to theneedle for action. The lower end of the part 8 is formed with a notch orshoulder, 1, which engages with a little pin or stud, 2, attached to theportion 9", for the purpose of maintainin g the parts in a verticalplane, in connection with the connecting-rivet and spring. This mode ofconnecting the parts '1- and .9 permits the part s to be swung or liftedto one side, as indicated by the dotted lines in Fig. 4. of thedrawings.

The lower end of the helper-bar is formed with a hole, 3, which, whenthe said bar is raised to its highest point, receives the inner end ofthe set-screw 4, and thus retains the helper or holder foot from contactwith the fabric or the sewing-machine table. In the front of theface-plate is also the set-screw h, which extends through the long armof the trip f and serves to retain the trip fin position, or, under thecircumstances hereinafter mentioned, is to be unscrewed.

It will be observed that the face-plate is made wide enough to admit theholder-bar, and the trip and lifter are placed between it and theneedle-bar, the cam of which is provided with a roller, which, in itsdownward movement, acts upon the trip, causing the bar to rise.

The letter Irepresents the trip device, composed of the curved verticalarm 20, pivotally connected to the helper-bar E, and the transverse arm11, pivoted to the upper end thereof, and also to the face-plate withinthe slot at, as shown in Fig. 2, and so arranged that the free end ofthe transverse arm '0 reaches under and engages with the anti-frictionroller ofthe camlift 0.

It will also be observed that there are some attachmentssuch as foothemmers, gatherers, rufflers, &c.--used on sewing-machines, which makeit necessary to disconnect this mechanism during the time suchattachments may be in use. To meet this I have provided ready andconvenient means for the purpose. Therefore to disconnect the resser-barunscrew the set-screw h in the face-plate until the long end orarm 0fthe trip is released, and to disconnect the holder or helper foot raiseit to' the highest point, when the hole 3 will register with theset-screw 4, which screw in place,

then press back the spring of the foot, draw the foot to one side, andthe device is disconnected, and by disengaging the free end of thespring H from the holder or helper foot and turning it to one side theholder or helpor foot can be thrown back and free access had to theneedle for threading and other purposes.

The same kind of a lift-lever is used as shown in my patent heretoforementioned.

The operation of this mechanism is substantially the same as that fullydescribed in my Letters Patent heretofore referred to.

I reserve the right to vary the construction and arrangement of theparts without departing from the spirit of the invention.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A cam-lift, 0, provided at its lower end with a journal-bearing andan anti-friction roller, substantially as described.

2. A cam-lift provided at its lower end with a journal-bearing and ananti-friction roller connected to a needle-bar, in combination with ahelper or holder bar and holder-foot with a trip device, operatingsubstantially as described.

3. A helper or holder bar having its upper portion reduced in diameterto receive a surrounding coil-spring,and at its lower end with arms fora hinge-connection, substantially as described.

4.. A helper or holder bar having its upper portion reduced in diameterto receive a surrounding coil-spring, and its lower end with arms for ahinge-connection, and with a lateral arm or extension, or, substantiallyas and for the purpose set forth.

5. A hinged helper or holder foot composed of the two parts r and s,substantially as described.

6. The combination of a needle-bar and its needle, the helper or holderbar E, having hinged thereto at its lower end the hinged holder-foot F,spring H, and operating mechanism, substantially as described.

7. The presser-bar D, formed with the shoulder d, and provided with theconnecting arm or link 0 and lover f, substantially as and for thepurpose set forth.

8. The combination, with the needle-bar and its cam-lift (J, of thepresser-bar D, provided with the connecting link or arm 0, pivoted leverf, and anti-friction roller't', substantially as described.

9. In a sewing-machine, the combination of a needle-bar having attachedthereto a cam provided with an anti-friction roller, a helperbar with ahinged helper-foot, a trip device, and a presser-bar and its foot,substantiallyas and for the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses,

MARTIN A. DILLEY.-

Witnesses:

J ULIEN B. ANDERSON, N. H. ANDERSON.

IUO

